Molecular Formula: (NH4PO3)n n>1000
Model No.: JD-657
Crystal form phase II ammonium polyphosphate (JD-657) is a nitrogen-containing halogen-free environment-friendly flame retardant, especially for the use of anti-fire retardant coating .The product has high degree of polymerization, good thermal stability, low hygroscopicity. Unlike halogen-containing flame retardant, in the burning process it forms expanded carbon layer to insulate heat and air. JD-515 has low smoke, low toxicity, no droplets, is a highly efficient inorganic environment-friendly flame retardant.
Specification：
| Technical Index | Chemical Industry standard HG/T2770-200 | Enterprises Standard |
| Appearance | White powder | White powder |
| P2O5 Content% | ≥71 | ≥71 |
| N Content % | ≥14 | ≥14 |
| Average Polymerization degree(ｎ) | ≥1000 | ≥1000 |
P Value值 | 5.5-7.5 | 5.5-7.5 |
| Particle Size（D50um）≤ | 20 | 5 |
| Solubility≤ | 0.5 | 0.5 |
| Moisture≤ | 0.25 | 0.25 |
| Bulk Density | 0.5-0.7 | 0.5-0.7 |
Uses: JD-657 is widely used in plastic (PP, PE, PVC, etc.), polyester, rubber, all kinds of high-grade expansion of fireproof coatings and other fields.
Packing: in net weight 25kg plastic woven bags lined with plastic liner.
